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 contract SafeMath    - function safeAdd(uint256 x, uint256 y ...    - function safeSubtract(uint256 x, uint ...    - function safeMult(uint256 x, uint256 ...  contract Token    - function balanceOf(address _owner)    - function transfer(address _to, uint25 ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...    - function allowance(address _owner, ad ...  contract StandardToken is Token    - function transfer(address _to, uint25 ...    - function transferFrom(address _from, ...    - function balanceOf(address _owner)    - function approve(address _spender, ui ...    - function allowance(address _owner, ad ...  contract ICEToken is StandardToken ... *    - function tokenRate()    - function ICEToken(    - function makeTokens()    - function()    - function finalize()

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/**
 *Submitted for verification at Etherscan.io on 2017-06-11
*/

pragma solidity ^0.4.10;

contract SafeMath {


    function safeAdd(uint256 x, uint256 y) internal returns(uint256) {
      uint256 z = x + y;
      assert((z >= x) && (z >= y));
      return z;
    }

    function safeSubtract(uint256 x, uint256 y) internal returns(uint256) {
      assert(x >= y);
      uint256 z = x - y;
      return z;
    }

    function safeMult(uint256 x, uint256 y) internal returns(uint256) {
      uint256 z = x * y;
      assert((x == 0)||(z/x == y));
      return z;
    }

}

contract Token {
    uint256 public totalSupply;
    function balanceOf(address _owner) constant returns (uint256 balance);
    function transfer(address _to, uint256 _value) returns (bool success);
    function transferFrom(address _from, address _to, uint256 _value) returns (bool success);
    function approve(address _spender, uint256 _value) returns (bool success);
    function allowance(address _owner, address _spender) constant returns (uint256 remaining);
    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}


/*  ERC 20 token */
contract StandardToken is Token {

    function transfer(address _to, uint256 _value) returns (bool success) {
      if (balances[msg.sender] >= _value && _value > 0) {
        balances[msg.sender] -= _value;
        balances[_to] += _value;
        Transfer(msg.sender, _to, _value);
        return true;
      } else {
        return false;
      }
    }

    function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
      if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) {
        balances[_to] += _value;
        balances[_from] -= _value;
        allowed[_from][msg.sender] -= _value;
        Transfer(_from, _to, _value);
        return true;
      } else {
        return false;
      }
    }

    function balanceOf(address _owner) constant returns (uint256 balance) {
        return balances[_owner];
    }

    function approve(address _spender, uint256 _value) returns (bool success) {
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }

    function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
      return allowed[_owner][_spender];
    }

    mapping (address => uint256) balances;
    mapping (address => mapping (address => uint256)) allowed;
}

contract ICEToken is StandardToken, SafeMath {

    string public constant name = "IDICE";
    string public constant symbol = "ICE";
    uint256 public constant decimals = 18;
    string public version = "1.0";

    address public ethFundDeposit;
    address public iceFundDeposit;

    bool public isFinalized;
    uint256 public fundingStartBlock;
    uint256 public fundingEndBlock;
    uint256 public constant iceFund = 500 * (10**3) * 10**decimals;

    function tokenRate() constant returns(uint) {
        if (block.number>=fundingStartBlock && block.number<fundingStartBlock+252) return 200;
        if (block.number>=fundingStartBlock && block.number<fundingStartBlock+36878) return 170; // first week
        return 130;
    }

    uint256 public constant tokenCreationCap =  5 * (10**6) * 10**decimals; /// 5M Tokens maximum


    // events
    event CreateICE(address indexed _to, uint256 _value);

    // constructor
    function ICEToken(
        address _ethFundDeposit,
        address _iceFundDeposit,
        uint256 _fundingStartBlock,
        uint256 _fundingEndBlock)
    {
      isFinalized = false;
      ethFundDeposit = _ethFundDeposit;
      iceFundDeposit = _iceFundDeposit;
      fundingStartBlock = _fundingStartBlock;
      fundingEndBlock = _fundingEndBlock;
      totalSupply = iceFund;
      balances[iceFundDeposit] = iceFund;
      CreateICE(iceFundDeposit, iceFund);
    }


    function makeTokens() payable  {
      if (isFinalized) throw;
      if (block.number < fundingStartBlock) throw;
      if (block.number > fundingEndBlock) throw;
      if (msg.value == 0) throw;

      uint256 tokens = safeMult(msg.value, tokenRate());

      uint256 checkedSupply = safeAdd(totalSupply, tokens);

      if (tokenCreationCap < checkedSupply) throw;

      totalSupply = checkedSupply;
      balances[msg.sender] += tokens;
      CreateICE(msg.sender, tokens);
    }

    function() payable {
        makeTokens();
    }

    function finalize() external {
      if (isFinalized) throw;
      if (msg.sender != ethFundDeposit) throw;

      if(block.number <= fundingEndBlock && totalSupply != tokenCreationCap) throw;

      isFinalized = true;
      if(!ethFundDeposit.send(this.balance)) throw;
    }



}

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